Jar-closure.



PATENTBD JULY 25, 1905.

J. P. LYON. JAR CLOSURE.

APPLICATION FILED nno.1o, 1904.

17V VENTOR llomen's.

maar," n www rn. "kamm-mmm immuun L JULIAN P. LYON, OF DETRIT, MICHIGAN.

JAR-CLOSURE.

Specification of Letters Patent.

Patented July 25, 1905.

Application filed December 10,1904. Serial No. 236.279.

To /r/U 7071/0171, it Nul/y concern:

Be it known that I, JULIAN P. LYoN, a citi- Zen of the United States, residing at Detroit, county of Vayne, State of Michigan. have invented a certain new and useful Improvement in Jar-Closures; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to jar-closures.

It has for its object an improved jar-closure adapted to be used to securely confine the contents of the jar and prevent the jar from leaking under varying conditions of the packing-disk or packing-gasket that is interposed between the seat for the gasket and the cap which is used to cover the jar.

In the drawings, Fig'ure l is a perspective of a jar-neck with the cover in position. Fig. 2 is a cross-section at the line a a of Fig. l, but with the lugs on the cover bent into engagement against the collar around the neck of the jar. Fig. 3 is a cross-section showing a jar cover or cap of slightly-different shape from the cap shown in Figs. l and 2. Fig. 4 is a sectional view showing a jar-neck with a bead over which the cap engages.

The top finish of the jar l may be of any shape or configuration, provided there be means for holding a cover or lid and a seating for the packing'. The lid is of material that is somewhat iiexible, but which has sufficient rigidity to be retained in place by lugs 2, that hang from a iiange 3 and are bent to engage under a projecting part, as the collar 4 of the jar, in order to secure the cap in place. The cap made from the selected material (preferably thin sheet metal) is provided with a corrugation 5, concentric with the flange 4 and spaced from the tlange 4 by a distance such that the beaded part of the currugated ring may yield slightly under strain and may possess the required resilience to return to normal condition when the strain is relieved. The part of the cap which lies inside the corrngation 5 may rise gradually to the center, as shown in Fig. 2, or the immediate boundary of the corrugation may rise sharply to a tabular part 6, as shown in Fig. 3, or there may be several corrugations. In any case there is facility for slight movement of the walls which bound the corrugation in a direction parallel to the central axis of the cap. This movement is opposed by the resiliency of the material, and if it be forcibly produced there is strong tendency of the displaced part to return to a normal position. A gasket, which may be either a disk that extends entirely across the mouth of the opening, or a ring, rests on a scat 7 under the cap,'and the cap is placed with the low part of the corrugation resting on the gasket and with the high part of the annular chamber surrounding the outer' corrugation lying above the extreme terminal of the jar and spaced therefrom and with the lugs 2 hanging below the lower edge of the collar 4. The cap is then forced down toward the jar, and the ends of the lugs are bent under the collar. This secures the cap in place and will hold it securely in place, even though the gasket is thickened by taking up moisture, as frequently happens, and should the package be so placed that moisture at one time taken up is subsequently dried ont from the gasket and the gasket then shrinks after having swelled the cap will still be held iirmly in place with the low part of the corrugation bearing strongly against the gasket.

In Fig. 4 is shown a form of closure in which the cap 6l is tabular and engages over a jar having a bead 5l on the top finish. The gasket 71 rests on the bead. The cover engages over the gasket and is sprung or forced to a position approximating that shown at 62. It may be mentioned that the actual amount of spring in the cover is exaggerated in the drawings.

What I claim is- 1. A closure for a jar having a flanging collar on the upper portion thereof, consisting of a cover having a depending collar integral therewith, lugs extending from the free edge\ of said collar, adapted to engage against and beneath the collar on the jar, said cover being provided with a circular corrugation lying between the depending collar and the center of the cover, and concentric therewith, substantially as described.

2. A closure for jars comprising a cover of resilient material provided with a cylindrical flange with lugs projecting therefrom, and adapted to be bent at an angle thereto, and with a circular corrugation lying between the ange and the center of the cover, whereby the web of the cover may yield and be held under tension, substantially as described.

3. A jar-closure, having in combination a gasket adapted to seat on the top finish of the jar, a Cover of resilient material, the top snr- 'faee thereol:l being' Corrugated, a flange depending' from the edge of said eover, and flexible lugs along the free edge of said flange whereby7 the cover may be held in place, substantially as described.

il. A jar-closure having' in combination a gasket adapted to seat on the top linisli of the jar, said jar being' provided with a langingcollar on the upper portion thereof, 'a cover ot' resilient material provided with a eireular eorrngation lying between the edge and the Center, a flange depending from the edge of JULIAN I). LYON.

Vitnesses:

MAY E. Ko'rT, VILL'IAM M. SWAN. 

